.main_common{
    margin-bottom: 60px;
}
.main_common>h3{
    float: left;
    font-size: 28px;
    color: #333;
}
.main_common>ul{
    margin-top: 3px;
    float: right;
}
.main_common>ul li{
    float: left;
    width: 98px;
    height: 34px;
    font-size: 18px;
    color: #333;
    text-align: center;
    line-height: 34px;
    cursor: pointer;
}
.main_common>ul .current{
    color: white;
    background-color: #ff6600;
}
.main_common .content{
    border-top: 6px solid #ff6600;
    box-sizing: border-box;
    width: 1200px;
    height: 506px;   
}
.main_common .content .main_content{
    display: none;
}
.main_common .content_l{
    background-color: #f9f9f9;
    width: 237px;
    height: 500px;
}
.main_common .content_l ul{
    float: left;
    font-size: 14px;
    line-height: 38px;
    margin: 0 19px 0 5px;
}
.main_common .content_c {
    width: 429px;
    height: 500px;
}
.main_common .content_c div:first-child{
    border-left: 2px solid #ccc;
    border-right: 2px solid #ccc;
}
.main_common .content_c div:last-child img{
    width: 427px;
    height: 156px;
}
.main_common .content_c div:last-child{
    width: 427px;
    height: 156px;
    border: 2px solid #ccc;
    border-left: none;   
}
.main_common .content_c .pptbox span{
    width: 36px;
    height: 70px;
    font-size: 26px;
    color: white;
    text-align: center;
    line-height: 70px;
}
.main_common .content_r{
    width: 534px;
    height: 500px;
}
.main_common .content_r li{   
    float: left;
    width: 178px;
    border-right: 2px solid #ccc;
    border-bottom: 2px solid #ccc;
    box-sizing: border-box;
}
.main_common .content_r li:nth-child(-n+3) img{
    width: 176px;
    height: 338px;
}
.main_common .content_r li:nth-child(n+4) img{
    width: 176px;
    height: 158px;
}
.main_common .brand_logo img{
    float: left;
}
